non profit administrator job description The principle of rational investment: investment in securities investment in analysis and comparison. Before that, what is the nature of the enterprise itself is an issue that has been ignored by traditional microeconomic theory. In the traditional microeconomic theory, is the manufacturer's production process as a "black box", namely enterprise is abstracted into a from input to output a "black box" of the pursuit of profit maximization. Point six: look at the use of borrowing. The borrower's borrowing use must be clearly understood, applicable to the business turnover, the decoration shop and so on. So investors should pay close attention to the borrowers' borrowing and repayment methods. Micron quarterly revenue and net income historical data The five-year average interest rate is also gradually rising, now more than 2 percentage points for the first time since July 2016.